Lubricator.



PATENTED SEPT. 6, 1904.

H. P. BIGKEL.

LUBRIOATOR. I APPLICATION FILED OCT. 12, 1903.

N0 MODEL.

R-CO/VPAESS PUMP UNITED STATES Patented September 6, 1904.

PATENT OFFICE.

HENRY F. BIOKEL, OF PL AINFIELD,

NEW JERSEY, ASSIGNOR TO NEW LUBRIOATOR.

SPECIFICATION forming part of Letters Patent No. 769,206, dated September 6, 1904:. pp n fi d October 2, 190,3. Seria1No.l76,623. (No model.)

To on whom it may concern.-

Be it known that I, HENRY F. BIOKEL, of Plainfield, county of Union, and State of New Jersey, have invented an Improvement in Lubricators, of which the following description, in connection with the accompanying drawings, is a specification, like numerals on'the drawings representing-like parts.

This invention relates to a lubricator, and is embodied in a lubricator adapted to be employed for lubricating the cylinder of an airpump or analogous apparatus containing a reciprocating piston working in a cylinder to be lubricated.

The lubricator forming the subject of this invention comprises an oil chamber or reservoir and a delivery-passage leading therefrom to the interior of the cylinder to be lubricated, said delivery-passage being constructed to constitute a siphon-passage from the oil-reservoir to the interior of the cylinder, whereby the lubricant is caused to flow through the delivery-passage into the cylinder or part to be lubricated in response to the changes in fluid-pressure due to the operation of the piston in the cylinder to be lubricated. By this construction the flow of lubricant is intermittent while the pump or piston to be lubricated is in operation, and the flow of lubricant ceases when the operation of the piston is stopped. Figure 1 is embodying this invention shown as applied to an air-compressing pump which is shown in longitudinal section, and Fig. 2 is a longitudinal section of the lubricator. The lubricator comprises a main body portion;l, constituting or containing a chamber or reservoir for the lubricant, said body portion being adapted to be applied to the cylinder or part to be lubricated in any suitable or usual manner and being shown as provided with a screw-threaded neck2 for that purpose. The delivery-passage 3 4: 5 is constructed to form an unobstructed or valveless siphon connection between the oil-reservoir and the delivery-point from the lubricator, said delivery-passage communicating with the oilreservoir near the lower end thereof andhaving aniupwardly-extending branch 3, extenda side elevation of alubricator* tus, the fluid when ing to a point above the level of the lubricant in the reservoir, and a downwardly'-extending branch 5, which constitutes the discharge-passage of the lubricator, said discharge-passage extending through the attaching-neck 2 of the 'lubricator-body. The portion 4 of the passage, as shown in Fig. 2, is made of small size to flow of the lubricant, said portion of the passage being-formed in a detachable part or screw 40, so that it may be exchanged for one having a passage of different size, if desired. In the construction shown the downward or dischargelimb 5 of the siphon-passage is made in a central portion 10 of the main body portion of the lubricator, which extends up through the lubricant-chamber to a point above the level thereof in the form of a central tube, having connected with it the screw 40, by which the flow of lubricant is controlled. I The rising limb 3 of the siphon delivery-passage is in the construction shown an annular space between the discharge limb or tube 10 and a sleeve 6, formed in the capnut or removable cover -7 for the lubricantchamber, which is tightly closed by said cover when in place.

The operation is as follows: When applied to the cylinder. of an air-compressing pump or apparatus of such nature that the fluidpressure alternately rises and falls in the cylinder during the operation of the apparaat the higher pressure, as when the piston of the pump makes its compressing stroke, passes from the cylinder through the delivery-passage 5 4: 3 0f the lubricator, forcing the lubricant in the upward flimb 3 of the delivery-passage down to the bottom of said'passage, afterwhich said fluid passes into the lubricant in the reservoir and rising to the top of the same becomes com-.

pressed in the lubricant-chamber above the lubricating liquid. pressure in the cylinder is reduced, as when the piston makes its suction-stroke, the fluid confined in the lubricant-chamber above the at a higher pressure eX- the-lubricant out. through the cylinder. The

lubricant being pands and forces the siphon-passage into Then when the fluidquantity of lubricant thus discharged into the cylinder at each alternate stroke of the piston or at each change from higher to lower fluid-pressure in the cylinder is determined 'by the size of the smallest portion of the delivery-passage, which for convenience is formed at 4 in the screw or detachable portion &0, applied at the upper end of the discharge-tube 10.

The removable cover 7 is shown as provided With a small vent-passage 8, terminating in or near the shoulder around the screw -thread 'ed neck. This permits of the escape of air which may be entrapped inside of the sleeve 6 in the operation of applying the cover to the lubrieator, said Vent remaining open until the cover is screwed nearly home and being finally closed or sealed when the cover is screwed down tight.

By the employment of the unobstructed or valveless siphon delivery-passage the actuating fluid and the lubricant flow alternately in opposite directions through said passage, which is thus kept clear, and the apparatus is less liable to derangement than where check-valves or analagous devices are required in order to govern the application of the fluid-pressure by which the lubricant is vforced from the lubricant-chamber.

1. A lubricator for cylinders comprising a tightly-closed body portion containing a lubricant-chamber and provided with a valveless sipho'n delivery-passage communicating with the lubricant-chamber near the lower end thereof and extending upward therefrom and thence downward to the discharge-outlet of the lubricator, as described, whereby the lubricant is fed intermittingly in response to the alternating high and low pressure in the cylinder or space to be lubricated, substantially as described.

2. In a lubrieator, the combination of the body portion containing a lubricant-clnmiber and a valveless discharge-tube rising through the said lubricant-chamber, with a removable tight-closing cover for the lubricant-chamber provided with a sleeve surrounding said discharge-tube and extending to the lower part of the lubricant-chamber, whereby an annular passage is formed from the lower end of the lubricant-chamber to the upper end of the discharge-tube, substantially as and for the purpose set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

E. MoG nRAn, GEO. G. IIICKINGBO'IHAM. 

